I've been using your fantastic module in a project, compiled in as a module rather than a plugin. With the latest commit to the repo it's no longer compiling successfully for me -- have any of the requirements or build instructions changed? I didn't see any changes to the readme about those things in the commit. I did notice that 2 of the submodule repos changed; that's what has me wondering if I need any new pre-reqs or anything.

I'll attach the compile output from where it started to go wrong.

compile_output.txt

in the readme, the line for creating plugin:
scons --sconstruct=gdextension_build/SConstruct target=template_debug

the sconstruct filename should have a lowercase 'c':
scons --sconstruct=gdextension_build/Sconstruct target=template_debug

Either that, or the filename for the script should be changed to uppercase C

Hello. Thank you for your wonderful add-on!
Sorry, I am completely noob with these compiling things.
But, I need to use serial with Godot 4, I tried to compile the add-on.
I think I managed to compile as "plugin", but Godot 4.1 give me the error.
(serialport.windows.template_debug.x86_64.dll and other two files are generated in bin folder.)

core/extension/gdextension.cpp:593 - GDExtension configuration file must contain a "configuration/compatibility_minimum" key: res://addons/serialport/serialport.gdextension
Failed loading resource: res://addons/serialport/serialport.gdextension. Make sure resources have been imported by opening the project in the editor at least once.

Is there way to fix this, and get it working?
I apologies my lack of knowledge, Please help me.

The generated gdextension seems to have two Major bugs.

1. its missing "compatibility_minimum" key (Godot throws errors if not set).
2. the "entry_symbol" key value is wrong, it generated a mismatched func name "serial_port_library_init" but in the source file the func is labeled "serialport_lib_init".